Tube-winding machinery.



A. W. JENKINS.

TUBE WINDING MACHINERY.

APPLICATION FILED DEG. 10, 1908.

Patented July 12, 1910.

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A. W. JENKINS. TUBE WINDING MACHINERY.

APPLICATION FILED 1330.10, 1908.

Patented July 12, 1910.

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UNITED snares PATENT orrion.

ALFRED N. JENKINS, 0F RICHMOND, INDIANA, ASSIGNOE, BY MESNE ASSIGNMENTS, TO SINGLE SERVICE PACKAGE CORPORATION OF AMERICA, A CORPORATION OF NEVJ' JERSEY.

TUBE-WINDING llIACHINEBY.

T 0 (ZZZ whom it may concern:

Be it known that I, ALFRED XV. JENKINS, a citizen of the United States, residing at Richmond, in the county of WVayne and State of Indiana, have invented certain new and useful Improvements in Tube-Winding Machinery, of which the following is a specification.

The object of this invention is to provide a machine adapted to wind strips spirally into continuous cylindrical or non-cylindrical tubes, and it involves using a mandrel having peripheral longitudinal sections which slide forward with the tube as it is formed and in succession move inward from the tube wall, return to initial position, move quickly outward to the tube wall, and again advance with the tube.

In the accompanying drawings, Figure 1 is a side elevation of a machine involving the invention. Fig. 2 is a vertical axial section of the same devices. Fig. 3 is a section on the line A B, Fig. 2, the upper segment being shown, however, as moved outward by slight rotation from the position indicated in Fig. 2. Fig. 4 is a section on the line CD, F i 2, one only of the peripheral mandrel sections being shown. Fig. 5 is a plan view of the same machine. Fig. 6 shows a hexagonal mandrel in cross section. Fig. 7 is a like section of a square mandrel.

In these figures, 1 represents a machine frame in the upper part of which is revolubly mounted a tube 3 having at one end a driving pulley 5 and at the free opposite end a sleeve 4. Near the body of the supporting frame the tube 3 is inclosed by a short rigid sleeve 2 having a cam or spiral end face 2 which makes approximately a complete turn around the tube 8. Upon the tube adjacent to the sleeve 2 is mounted a loose sleeve made up of longitudinally sliding, independent or distinct laterally curved bars 6, each having at one end a flange G to ride upon the periphery of the sleeve 2 while the end of the body portion of the bar normally rests against the end face 2 against which it is urged by a spring 6 within the tube. The outer end of the sleeve formed by these bars or sleeve sections is, like the sleeve 4, of slightly less diameter than the interior of the tube to be formed, but the body portion of the sectional sleeve is larger, the sections here being slightly thicker and being also held away from the Specification of Letters Patent.

Application filed December 10, 1908.

Patented July 12, 1910..

Serial No. 466,923.

tube 3, normally by the flanges 6 leaving a space a: 3 Fig. 2, between the sections and tube. Each section has upon its inner face near its ends lugs 6 6 lying in slots 3, 3 in the tube 3 and thus compelling the sections to rotate with the tube. As the tube 3 is rotated, the sections are all forced forward on the tube by the spiral face 2", and as each leaves the end of that face it ceases to be held away from the tube by its own flange and consequently swings inward from the tube wall owing to the lever-like action of the end portion of the spring and the tendency of the spring to move the parts into a straight line joining the forward end of the segment and the rear end of the spring and, the spiral face no longer preventing, it is instantly drawn back to the other end of that face by the spring 6 The fixed sleeve 2 is cut away at the proper point as seen in Figs. 1 and 3, so that as each section thus moves rearward its flange may not strike the face 2. The recess into which the retracted section thus enters has on one side an incline 2 up which the flange instantly begins to travel in rotating with the tube, and hence it is again quickly carried outward to ride again upon the body of the sleeve 2.

In use, a strip of paper (let) is wound obliquely upon the sectional mandrel and a second parallel strip, 15, is pressed upon the first in position to break joints therewith, and the two are cemented together, the meet ing faces being, as usual, supplied with adhesive material. By the continued rotation of the mandrel, tubing is continuously formed upon the larger portion of the sectional sleeve and carried forward over the smaller part by the longitudinal advance of the sections, the flange portions of which form a shoulder pressing against the margin of the inner strip. The sectional sleeve is thus constantly advancing and its parts are returning at short intervals to initial position.

Obviously, the number and external form of the sections may be varied, and Fig. 6 illustrates in cross section six sections 6* adapted to form a hexagonal tube, while Fig. 7 shows in like manner four sections 6 arranged for forming a square tube.

Mechanism shown but not herein described has no novelty herein claimed.

What I claim, therefore, as my invention and wish to protect by Letters Patentof the United States is:

1. In tube winding mechanism, the combination with a continuously rotating mandrel having longitudinally movable peripheral sections, of automatic means for forcing the several sections forward in succession and releasing them as each reaches a certain point in its path, and automatic means for returning them in succession to initial position while the mandrel is rotating.

2. In tube winding mechanism, the combination with a non-cylindrical mandrel adapted to receive spirally wound strips and having longitudinally movable segments each forming a portion of the entire circumference, of automatic means for moving the segments separately forward and back while the strips are being wound about the same.

3. In tube winding mechanism, the combination with a constantly rotating mandrel having longitudinally movable peripheral segments, of cam devices in position to meet the ends of the segments forcing them forward and suddenly releasing them as the mandrel rotates, and automatic means for suddenly retracting the released segments in succession.

4. In tube winding mechanism, the combination with a mandrel having longitudinal segments of its periphery arranged for moving back and forth longitudinally and to ward and from the mandrels axis, of automatic means for moving the segments outward from the axis, advancing them longitudinally and releasing them in succession, and automatic means for moving the released segments inwardly and retracting them.

5. In tube winding mechanism, the com binatlon with a continuously rotating mandrel having its outer surface made up of radially and longitudinally movable segments, of automatic means for moving the end of each segment outward at the rear end of its longitudinal path, advancing it along said path and suddenly releasing it, and springs arranged to swing inward and retract each released segment.

6. In tube winding mechanism, the combination with a continuously rotating mandrel having distinct, longitudinally movable peripheral sections, of means for advancing the sections longitudinally as the mandrel rotates and releasing them in succession, and means for suddenly retracting each section upon its release.

7. In tube winding mechanism, the combination with a rotary mandrel having inwardly and longitudinally movable peripheral sections, of means for holding all the sections in outermost position, advancing them longitudinally and releasing them in succession, springs arranged to retract each section longitudinally when it is released, and means for moving each again out-ward when retracted.

8. The combination with a rotary mandrel tube having longitudinal slots, of a collapsible sleeve inclosing the tube and made up of distinct longitudinally sliding sections having lugs projecting inward through the slots, a cam arranged to force the sections along the tube as the latter rotates and release them in succession as they reach a limit of advance, and springs within the tube, acting upon said lugs to retract the sections upon their release.

In testimony whereof I have aflixed my signature in presence of two witnesses.

ALFRED W. JENKINS.

WVitnesses:

M. H. DILLON, H. G. IREDELL. 

